1,287 Stedman Caters

Robert M Kilby (No 7)
231456789  5 16
412356978    a 
2134       -  2 |A
312654     -  - |
213456798    b
413652       A 
314265879    c
4123       -  2
2143       -  s
a = 2.4.s6.10.12.13.16 (16)
b = 1.2.5.s9.16
c = s1.2.5.9.16